
Electrical Apparatus for Potentially Explosive Atmospheres - Type of Protection 'n'
出版:National Standards Authority of Ireland

专家解读视频
Gives requirements for the construction, testing and marking for Group 2 electrical apparatus with type of protection 'n', intended for use only in areas where explosive atmospheres of gas, vapour and mist are unlikely to occur or if they do occur, are likely to do so infrequently or for a short period only.
NEN EN 50021:1999 - Identical
DIN EN 50021 : 2000 - Identical
BS EN 50021 : 1999 - Identical
NEN EN 50021 : 99 C1 2000 - Identical
EN 50021 : 99 COR 2000 - Identical
SN EN 50021 : 1999 - Identical
SN EN 50021:1999 - Identical
BS EN 50021:1999 - Identical
DIN EN 50021 (2000-02) - Identical
NF EN 50021:2000 - Identical
UNE EN 50021:2000 - Identical
SS EN 50021 Ed. 1 (1999) - Identical
NEN EN 50021 : 99 C1 2000 - Identical
UNE EN 50021 : 2000 - Identical
NF EN 50021 : 2000 - Identical
NBN EN 50021 : 1ED 2000 - Identical
BS EN 50021 : 1999 - Identical
DIN EN 50021 : 2000 - Identical